Loom-treadle guide



' April 13, 1926.

J. B.'BELL Filed Dec; 19. 1925 ATTORNEY Patented Apr. 13, 1926 UNIT EnsrrA PATENT G ms,

JAMES B. BELL, OF PEIiZER, SOUTH CAROLINA, ASSIGNOR TO DRAPERCORPORATION i OF HOIPIE'IDALIEI, MASSACHUSETTS, A CORPORATION OF MAINE.

LOOM'TREADLE' GUIDE.

Applicationfiled. December. 19, 1925. SerialNc'. 76,390.

To all whom it may concern.

Be it known that I, J AMES B. Berna cit1- zen of the United States,residing in Pelzer,

in the county of Anderson and State of South Carolina, have invented anImprovement in. Loom-Treadle Guides, of which the followingdescriptiomin connection-With the accompanying, drawings, is a:specification, like characters on. the drawings representing likeaparts.v

This invention relates to loom treadle guides for directing the movementof the treadles in a cam operated shedding mechanism. y

In that type of shedding mechanism wherein the heddle frames areactuated by cam operated treadles, it is now the common practice tomount .the treadles at the rear of the loom and connect the free ends ofthe treadles to the heddles. and ithas also been proposed to guide thefree ends of the treadles. in their shed forming movements.

Ina shedding mechanism of the cam and treadle operated type, rolls havebeenmounted upon the treadlesfor engagement by treadle operating cams,and in such cases the rolls,.or cams, or'both, are liable to be comeworn during use, with the result. that the treadles themselves ,aresubject to a twisting; action abouttheir longitudinal axes to such anextent that at times the treadles may be broken. This is especiallyobservable in cases where the treadles are fulcrumed at the rear of theloom by open.

fulcrum bearings, and one of the objects of the present invention is toprovide means for distributing the wear between the cams and rolls andat the open fulcrum bearings, with the result that the Wear at thesepoints will be uniform throughout and consequently obviate any twistingor torsional action upon the treadles about their longitudinal axesduring weaving.

More specifically stated, the present invention contemplates theprovision of a treadle guide between the treadle actuating cams and theharness connections, which may be located closely adjacent the harnessconnections, and comprising in its construction a guide supporting barsecured to the loom frame and extending above the treadles, and providedwith a downwardly extending slotted guide frame through which thetreadles project.

The invention and new combination of parts V1111 best be made clear fromthe follownig drawings of one good form thereof. 7

In the drawmgsz.

Fig. 1' is aperspectiveview showingacam.

and treadlev actuated shedding mechanism having; the present inventionassociated;

therewith V Fig: 2 is an enlarged: detail view of the treadle guide; and

Fig.3 is a side elevation partly in section:

showing the mounting. of the treadles by open fulcrum bearings.

Theloomframe may be of usual construc tion. and have extendingyupwardlvtherefromthearch supportsl, between which ex.- tends the arch; 2, fromwhich. the. heddle frames may be suspended.

instance, the arch 2is providedwith the bearings 3 in whichv issupported the rocker 4 having the upper harness connections 5 and 6.secured thereto. 'Ilheharness connec tions- 5 and 6 are connected:respectively with the upper bars 7 dle frames 9- and 10,.and connectedto the lower bar of each heddle frame isa. spacer rod 11 and'1 2; The:construction. so: far de-. scribed: may be of any, usual type-and is.

herein: shown as constituting one? good prac. tical form of heddles andharness connections that may be employed with the present invention.

Extending between the front and rear girths 13 and 1 1 are the beams 15and 16, and to the rear one of the girths (14 as shown) are securedbearings or lugs 17 supporting a stud or dead shaft 18 on which thetreadles 19 are mounted for rocking movement, As shown, each of thetreadles 19 has an open fulcrum bearing 20 which hooks over or restsupon the stud or dead shaft 18, and between the fulcrum bearings and theends of the treadles are the treadle rolls 21 which are engaged by thetreadle actuating cams 22 mounted upon the under or cam shaft'23, theconstruction being such that as the under or cam shaft23 is rotated, thetreadles will have imparted thereto an up and down movement. The freeend portion of each treadle is provided with a series of'teeth 24between which and the spacer rods 11 and 12 extend the harnessconnections or straps 25.

description and the accompanying perspective In. the present:

and 8 ofthe: two hed- I The particular feature of the present inventionconsists of a treadle guide more particularly shown in Fig. 2, whichcomprises a rod supporting bar 26 having foot portions 27 at each endadapted to be secured to the fore and aft extending beams 15 and 16.

The treadle guide supporting bar; 26 is curved upwardly, as indicated inFigs. 1- and 2, so that it. may be located above. the treadles andextend over the tops thereof between the treadle actuating cams andharness con- DQCtIODS."

The arched treadle guide supporting bars 26 has extendingfrom itsconcavesurface the downwardly projecting guide frame 28, provided with openingsor slots 29 through which the treadles 19 extend. In order that thetreadles 19 may be properly guided in their up and down movements in theslots 29 and prevent unequal wear ofthe open fulcrum bearings and thecams or rolls 22 :and 21 respectively, the slots 29 in the guide frame28 are made to closely embrace the side portions of the treadlesadjacent the harness connections 25 and between such connections andthetreadle actuating cams.

I Since the treadle guide supporting bar 26 is to extend above the topsof the treadles between the treadle actuating cams and harnessconnections, it is curved upwardly'or arched to provide for the desiredamplitude of movement of the free end portionsof the treadles. It' isfound in practice thata treadle guide to properly function asherein Idescribed, should not only be secured to the loom frame, but thesupporting bar itself -should be disposed above the treadles with theguide frame extending downwardly therefrom, and to effect rigidity ofthe treadle guide the arched supporting bar 26 and the guide frame 28may be formed as a supportingibar' to the frames 15 and16'. By looseningthenuts 32 the. treadle guide maybe adjusted towards or from the harnessconnections or towards or from the treadle actuating cams, to mostefiectively function in preventing torque or twisting movement of thetreadle and unequal wear between the treadle actuating cams and rolls.

hat is claimed is: 1. A treadle guide for looms, comprising an upwardlyarched guide supporting bar having end feet provided with means forsecuring the supporting bar in different 'po' sitions tothe loom frame,and a treadle guide frame extending downwardly from the archedsupporting bar and having guide openings for the treadles.

A treadle-guide forlooms, comprising an upwardly arched guide supportlngbar having-end feet for'secu'ring the supporting bar to the loom frame,and a guide frame extending from the concaved portion of the supportingbar and having guide openings.

In testimony whereof, I have signed my name to this specification. J

7 JAMES 'B. BELL.

